DB'ing isn't *always* about saving a marriage. In fact, it's a secondary goal. DB'ing *is* about saving yourself.
If you are done then you are done and that is your choice to make. It seems to me though that you are making that choice AFTER a very highly charged emotional night/meltdown you had.
Your post is filled with speculation and mind reading. And you may or may not be way off base. I simply urge you to really take a few days to cool off and refocus. Six weeks of DB'ing is a mere second in reality. Especially if you are only DB'ing for you and your future.
He called you his wife and you said that meant nothing to you. Maybe it meant something to him. Don't jump the gun because you are angry, jealous, tired or frustrated. DB'ing is not for the weak and it's a very long, slow and tedious process.